going to be a fun flight on virgin america but having companion with these little guys it will be an awesome flight. >> it's wonderful. some of them have been at the shelter for a while so volunteers have gotten to know them. we had some volunteers come in last night to visit and say good-bye and say good luck to everyone. >> reporter: fourteen in all from the san francisco animal care and control in san francisco have been chosen to make the trip to the an mail care and control in new york city. the dogs are flying virgin atlantic this morning. we watched volunteers unload the dogs about an hour ago. virgin teamed up with the shelter again this year and picking up the tab. the reason for the swap, the aspca in new york city has a need for chihuahuas and other small dogs and in northern california the opposite is true. oftentimes too many people adopt chihuahuas thinking they will be the perfect pet for small children because of their size or that they don't need exercise. and they find they just can't care for these small little dogs. chihuahuas are also overbred. here's where you c